Here's a picture of the the safest way to hold the adapter for boring. It is definitely not necessary but highly recommended. Although the more mechanically inclined members will have no problems with this, I wouldn't want anyone getting hurt boring out this part... and I take no responsibility for any injuries that may occur.

For those in the know, or want to know, this lathe is nothing special. It is a standard Jet 9x20 manual lathe.

OK, I brought my small-pin gauge set home and measured the ID of the smaller diameter pipe. I went up to a 0.195" gauge, went up about an inch and seized. It feels like another 0.002" or so, but I don't want to risk scratching up the inside. With thread standards so loose, roughtly +0.002" is well within tolerance of a 0.195" hole.

If this works out for you, this would translate to either a 1/4-20 or M6-1.0 thread. Either way, the hole is 0.195".

So, if I understand correctly, the hole size is as large as the thread OD, so no go with the V2 tip. I would have to look for larger tip thread from something else. What is the small part of the tube OD. Thanks.

If you really have your heart set on it, there's an option for you. It would require 1 extra step and a 2-tool investments... plus parts.

You could get a SPI tap for, say for a M4-0.7 or M5-0.8 Helicoil. This would cut into the appropriate threads into the V3 pipe. Then you install your Helicoil. Now you've essenntially reduced the diameter to accept a smaller thread.

So you would need- SPI tap for M4 or M5. You'd have determine which is appropriate.- Helicoil install tool. You might be able to do it with a small enough tweezers but it'll be diffcult to break the tab when you're done- M4 or M5 Helicoil. You should be able to get these from McMaster or Olander.

I'm just going to assume everything is metric on all these machines. I think it's a pretty safe call.

Or chuck a piece of brass in the lathe, bore a center hole and nozzle hole, mine is about 0.053", and then chose the neck and thread size and tap the wand tube to fit the tip just made. Not as simple as I would like. I prefer nice solutions that most of could duplicate with home tools and if purchases are necessary, then for common or multi use items.

One of the reasons that I liked the PID controller mod was that most of us are capable.

I've done away with the entire Gaggia steam valve assembly and replaced it with standard sized fittings. The V3 steam valve is now tucked under about an inch to give more ground clearance, and more of that "factory" look.

The steam valve (the valve itself) was replaced with a 90 degree ball valve. It turns 1/4 turn, much like a commercial steam levers. I'll be changing the lever out for something that looks nice; probably machine something out of stainless steel, weld on a handle and polish it up.

It's so massive that the plumbing needs to be fully assembled and bolted to the boiler and set in place, all at once. This will make things difficult for me to get into the "brain".

There is a little rust on top of the new black oxide bolt, but it's on the outside of the boiler. I didn't have stainless steel M6x10 bolts on hand so I cut what I had. I'll replace those with stainless steel bolts at a later time.

So, daduck748, what is the simplest way for someone to get the silvia v3 wand on the gaggia classic? Is the solution to replace the valve so you can use commonly found connectors/adapters? I would think it would have to be a solution that doesn't require one to get any parts "made". Would be interested to get your final thoughts on this and perhaps a parts list of what we'd have to get. That'd be awesome!

No, what I did was a bit more advanced and really a part if a "system" that involves multiple aspects if MY machine and its implementation. That's why I had to replace my steam valve.

I think there is a parts list throughout this thread, but I can put something together shortly, since I'm out and about at the moment.

It's been a long time since I've done this so just from memory, it was quite simple. I think I greatly simplified the modification to simply an adapter I bought from EspressoParts. This adapter was not a PERFECT fit but it will work out-of-the-box if you don't mind hodge-podging it. It will all fit but I think one side, the M10 side (the Gaggia side) had to be chased with a M10 tap to fit properly. I think the Silvia side is a 1/2 or 3/4 BSPP or something that fit the steam wand, which fit perfectly. However, you can't screw it in all the way because the tension spring needs room. You don't need the spring, but then you would rely on the ball sitting against the adapter for tension; metal-rubbing-metal is never a good thing. This is why I bored out the bug side of the adapter.

Other than that, it's a straight forward install.

I think I've had this on my machine for I don't know... call it a year and I simply live it. The old Gaggia wand sucked and is a lot harder to clean than Gaggia makes it out to be. I have a Breville milk frother I use to use to froth my milk, which took FOREVER. Now with the Silvia V3, I get GREAT frothed/steamed milk for my lattes. I use less milk, which dilutes the espresso less, and the steamed milk really brings out the sweetness of the milk and accentuates the espresso taste... yum... and it only takes about 30-45 seconds, vs 2 minutes with the Breville.

If you dig through this thread, I mentioned the EP part number to buy. I'll look for it when I get home.

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